extension ExtPose

Viewport Resizer – Responsive Testing Tool

Description from extension meta

Responsive design testing tool to test any website’s responsiveness – it only takes 2 seconds! Emulate various screen resolutions.

Image from store Viewport Resizer – Responsive Testing Tool
Description from store Viewport Resizer is a tool to test any website’s responsiveness. Just install the extension, go to the page you want to test and check all kinds of screen resolutions of the page. The smartest way to share your defined environment of devices and breakpoints directly with your team and client. This tool should not replace a real device simulation. It rather helps you, your team and client testing statuses, transitions, text length etc. throughout different device types.

Latest reviews

  • (2020-06-27) Mauricio Vuljevas: Please Improve the toolbar icon, y really ugly!, the extension, it's amazing, contrats. (4 stars because of the ugly toolbar icon haha)
  • (2020-01-12) Javier Piraquive: Excelente aplicación, no funciona con LOCALHOST, debe estar el sitio en un servidor externo.
  • (2019-10-20) Dezso Markon: It's better then the rest of the similar extensions, however on reload resets the size of the viewport, so it's kind of useless for development. Would be nice to implement this just like like Firefox does.
  • (2019-09-03) Tim Graham: Great extension. The 5th star wasn't given due to having to store custom sizes in a bookmark which isn't user friendly. Apart from that, it's the best as it only the resizes the viewport instead of the entire window like other extensions.
  • (2019-07-22) Pete Leigh: Was really excited when I seen this, makes my developing go a lot faster 5/5
  • (2019-02-27) Kaisma Penn-Titley: Inconsistently works for me, that is, I click on the icon and it does not respond or prompt me with options. When it does work, it resizes to the selected specification but is very frustrating when I am constantly clicking and it's not doing anything.
  • (2019-02-16) Phoenix Kiula: Should work with localhost or file system as well, where most of the testing is done. It seems to require a functioning website, which is silly.
  • (2018-10-15) Samir Bipecka: I also love that it does not resize the browser window but only the viewport.
  • (2018-09-15) Shantalle Goh: thank u so much for this great tool. it is not just valuable, it is fun too! The Animate button LOL. Thank u for the great creation.
  • (2018-06-01) Pratik Thakkar: One of the best Developer extensions for testing on multiple devices. Best part is that it does not resize the browser window. I strongly recommend this tool
  • (2018-05-11) Sergio Acosta: I love that it does not resize the browser window but only the viewport, unlike most other resizing extensions.
  • (2018-05-10) ศุภวัฒน์ ตันมณี: ชอบที่สุดตั้งแต่ใช้มา ถ้าสามารถ edit custom size และ range ในการทำ animation ด้วยจะเยี่ยมมาก --------- Best re-sizer tool for me, please make custom size easier (via live textbox) and configurable animation range for better
  • (2018-05-04) Andi Wahyu Saputra: love it a lot
  • (2018-04-19) Marco Chieffi: Vi prego di aggiornare la lista dei dispositivi
  • (2018-04-19) Rogério Dec: Excellent!The Best!
  • (2018-03-27) Tomaž Krt: Clicking the icon does nothing.
  • (2018-03-09) Helen Lazareva: love this tool, extremely helpfull
  • (2018-03-09) Damir Males: Very Good app If it allows a screen size pictogram between 320 and 600px it would be great :)
  • (2018-02-23) Manali Prasad: Easy and useful
  • (2018-02-15) R. Muhamad Dwi Rizki Lazuardi: Very good, the only extension that work well to test even large display resolution. More precise than chrome device toolbar to develop pixel perfect website. The only missing feature is to save multiple custom resolution.
  • (2018-01-27) Andrew Gibbs: Does nothing!
  • (2017-12-19) Sattar Shamad: this is just what i need.. big applause for the developer
  • (2017-11-27) hehexd
  • (2017-11-27) Marc Rosillo: Gracias
  • (2017-11-22) Duncan McCarthy: spot on, exactly what I needed. nice to see an app like this with a usable UI too - great work.

Latest issues

  • (2020-04-24, v:1.1.9) Tomasz Zemsta-Piasecki: Problem with google chrome and windows 7 operation system (64-bt)
    It doesn't work
  • (2020-04-02, v:1.1.9) June Smith: testing local files
    I apologize if you received this before. When testing an html file saved locally I get a "Cross-domain security error". can this extension even be used for local files? thank you for your time.
  • (2020-01-16, v:1.1.9) Brian G: Custom Sizes
    Is it possible to add custom screens/devices?
  • (2020-01-08, v:1.1.9) Millie Hernandez: Problem
    Everything was working fine but now when I click on the extension the panel does not appear for me to switch between different sized screens. So I'm not able to use the extension at all.
  • (2020-01-02, v:1.1.9) Shiblee Mehdi: Removed the extension but still specific URL opens in mobile view
    Hi, I was testing an URL. Later on removed this extension but still my testing URL opens in mobile view. How can I go back?
  • (2019-10-31, v:1.1.8) Poonam Yadav: Viewport Resizer
    Viewport Resizer not working properly...
  • (2019-02-15, v:1.1.8) Marc Thiong'o: cant save custom size
    Trying to save a custom size but there's no way to do so or its well hidden. Otherwise the app is great!
  • (2019-02-04, v:1.1.8) Robin Richey: Stopped working.
    With the latest release of windows 10 the extension no longer opens.
  • (2018-12-21, v:1.1.8) Dania al khalil: how it works ?
    Hello ,i added it to chrome and open my website and then once i click on the view port resizer icon -> The website is gray and doesn't open anymore -> a gray page only Please advice Thank you
  • (2018-10-19, v:1.1.8) Adam Spiers: Doesn't work on medium.com
    When I visit a medium.com page and click the icon, it just reloads the page but the resizer strip doesn't appear.
  • (2018-05-10, v:1.1.8) ศุภวัฒน์ ตันมณี: Animation configurable
    It's better if can set custom size for animation function
  • (2018-05-10, v:1.1.8) ศุภวัฒน์ ตันมณี: Custom size faster
    Please make live input for custom size
  • (2018-03-19, v:1.1.8) Mark Parra: loads blank bar
    when i initiate the plug in the top bar loads but nothing loads within. blank bar with no presets.
  • (2018-03-19, v:1.1.8) Marc Scheithauer: Keine Funktionalität
    Die Erweiterung hat leider keine Funktionalität in Chrome 65 unter Mac OS X High Sierra ...
  • (2018-01-11, v:1.1.8) melscott scott: my lap top screen is
    my lap top screen is to small for a robot I purchased how can I shrink the the robot to fit into my lap top screen please thank you m p s


43,414 history
4.2511 (227 votes)
Last update / version
2019-12-28 / 1.1.9
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